Mcormick starting issues

[IloveJesus]

I have a diesel 40 HP McCormick. I changed the fuel filter about 2 weeks ago, and air bled the system, because there was water in the fuel.
Tractor has been running well since.
This morning I went to start, and it would only stay running with the key in the start position, as soon as I release the key to the run position the tractor shuts off.
I put fresh fuel in it, also have been putting conditioner in as well.
I removed the filter and there is no evidence of water or debris in there. I re-bled the system, but only at the main bleeder screw, and there really wasn't any air in there. And alas still the same thing.

Temperature is pretty cold here, close to minus 35 Celsius, but the tractor is plugged and the coil is warm.
It has started in this cold weather all last week, so the cold is not the problem.


Any thoughts?

 

[Stimw]

My best guess is a problem with fuel shut off solenoid only opening in the start position.

 

[IloveJesus]

My best guess is a problem with fuel shut off solenoid only opening in the start position.

Thanks Stimw.

Would the shut off solenoid still allow the tractor to start with the key on the start position?
And would it give indication that it is about to go, or would it stop suddenly?

 

[IloveJesus]

My best guess is a problem with fuel shut off solenoid only opening in the start position.

Also is there a way to test it?

 

[Stimw]

The solenoid opens when 12 V power is sent to it. Turn the power off (key) and it closes shutting off fuel.
If the solenoid has a plug you could unplug it and hot wire then try starting.
Problem is possibly in the key switch contacts not connecting/dirty in run position.

 

[Dave M7040]

Mountain like just north of South Mountain and Nationview Public School?

Exactly what model is your McCormick and what age is it?

Do you have a wiring diagram in your owner's manual. If you do plse post it.

The engine stop solenoids usually have two internal coils. One called the pull in coil and the other, lower powered , the hold coil.

Post a photo of the side of your engine with the injection pump. I need to see if your solenoid is external to the injection pump.

Found this web site for Daedong engines which nis what your tractor likely has but will need more info from engine label(s)
http://vi.dzima.com/wp-content/uploads/2015/01/Daedong-Workshop-Manual-Production-Release-1.0.pdf
Dave M7040

 

[IloveJesus]

The solenoid opens when 12 V power is sent to it. Turn the power off (key) and it closes shutting off fuel.
If the solenoid has a plug you could unplug it and hot wire then try starting.
Problem is possibly in the key switch contacts not connecting/dirty in run position.

Ok Thanks Stimw,
Will check it out and let post back

 

[IloveJesus]

Mountain like just north of South Mountain and Nationview Public School?

Exactly what model is your McCormick and what age is it?

Do you have a wiring diagram in your owner's manual. If you do plse post it.

The engine stop solenoids usually have two internal coils. One called the pull in coil and the other, lower powered , the hold coil.

Post a photo of the side of your engine with the injection pump. I need to see if your solenoid is external to the injection pump.

Found this web site for Daedong engines which nis what your tractor likely has but will need more info from engine label(s)
http://vi.dzima.com/wp-content/uploads/2015/01/Daedong-Workshop-Manual-Production-Release-1.0.pdf
Dave M7040

Hi Dave,

Yep, Just north of South Mountain.

Thanks for the link, very helpful.

Either 2011 or 2012 X10.40.

No wiring diagram. .

I will post a photo.

Thanks for the help

 

[IloveJesus]

Mountain like just north of South Mountain and Nationview Public School?

Exactly what model is your McCormick and what age is it?

Do you have a wiring diagram in your owner's manual. If you do plse post it.

The engine stop solenoids usually have two internal coils. One called the pull in coil and the other, lower powered , the hold coil.

Post a photo of the side of your engine with the injection pump. I need to see if your solenoid is external to the injection pump.

Found this web site for Daedong engines which nis what your tractor likely has but will need more info from engine label(s)
http://vi.dzima.com/wp-content/uploads/2015/01/Daedong-Workshop-Manual-Production-Release-1.0.pdf
Dave M7040

Hi Dave,

I tried posting a picture, but don't seem to be able to for some reason

The fuel pump, has the solenoid attached to it at the end (near the front of the tractor), so no external shut off solenoid. It has a single wiring connection going to it. It looks similar to the diagram in the link you sent me on page 3.5.2 BASIC PRINCIPLE OF GOVERNOR SYSTEM
Hope this helps. I will try again and post a pic.

I called Reis in Winchester and they affirmed what Stimw was saying about disconnecting it and bypassing the solenoid to start the tractor.

Will try and remove the connector without breaking it, in this cold.

Thanks every one for all your help.

Will keep you posted.

 

[RandyT]

Also don't overlook an issue with the key switch getting gummed up in the cold and not maintaining the correct contacts in the switch.